---

yaml
---
r: 271547
b: refs/heads/auto
c: 4c52745
h: refs/heads/master
i:
  271545: 35fde99
  271543: 40502d9

Author: nikomatsakis

[refs]

@@ -8,7 +8,7 @@ refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503
 refs/tags/release-0.3.1: 495bae036dfe5ec6ceafd3312b4dca48741e845b
 refs/tags/release-0.4: e828ea2080499553b97dfe33b3f4d472b4562ad7
 refs/tags/release-0.5: 7e3bcfbf21278251ee936ad53e92e9b719702d73
-refs/heads/auto: b385ce12232a6c192b168b75ec9867a5a83d2036
+refs/heads/auto: 4c527457f147881dc864b8b737c4288540b32208
 refs/tags/release-0.6: b4ebcfa1812664df5e142f0134a5faea3918544c
 refs/tags/0.1: b19db808c2793fe2976759b85a355c3ad8c8b336
 refs/tags/0.2: 1754d02027f2924bed83b0160ee340c7f41d5ea1

branches/auto/src/librustc_trans/back/linker.rs

@@ -23,7 +23,6 @@ use session::config::CrateTypeDylib;
 use session::config;
 use syntax::ast;
 use trans::CrateTranslation;
-use trans::link_guard;
 
 /// Linker abstraction used by back::link to build up the command to invoke a
 /// linker.
@@ -361,25 +360,6 @@ impl<'a> Linker for MsvcLinker<'a> {
                 writeln!(f, "  {}", symbol)?;
             }
 
-            // Add link-guard symbols
-            {
-                // local crate
-                let symbol = link_guard::link_guard_name(&trans.link.crate_name[..],
-                                                         &trans.link.crate_hash);
-                try!(writeln!(f, "  {}", symbol));
-            }
-            // statically linked dependencies
-            for (i, format) in formats[&CrateTypeDylib].iter().enumerate() {
-                if *format == Linkage::Static {
-                    let cnum = (i + 1) as ast::CrateNum;
-                    let crate_name = cstore.original_crate_name(cnum);
-                    let svh = cstore.crate_hash(cnum);
-
-                    let symbol = link_guard::link_guard_name(&crate_name[..], &svh);
-                    try!(writeln!(f, "  {}", symbol));
-                }
-            }
-
             Ok(())
         })();
         if let Err(e) = res {

branches/auto/src/librustc_trans/trans/base.rs

@@ -79,7 +79,6 @@ use trans::expr;
 use trans::glue;
 use trans::inline;
 use trans::intrinsic;
-use trans::link_guard;
 use trans::machine;
 use trans::machine::{llalign_of_min, llsize_of, llsize_of_real};
 use trans::meth;
@@ -2384,7 +2383,6 @@ pub fn create_entry_wrapper(ccx: &CrateContext, sp: Span, main_llfn: ValueRef) {
         unsafe {
             llvm::LLVMPositionBuilderAtEnd(bld, llbb);
 
-            link_guard::insert_reference_to_link_guard(ccx, llbb);
             debuginfo::gdb::insert_reference_to_gdb_debug_scripts_section_global(ccx);
 
             let (start_fn, args) = if use_start_lang_item {
@@ -2763,8 +2761,6 @@ pub fn trans_crate<'tcx>(tcx: &TyCtxt<'tcx>,
         symbol_names_test::report_symbol_names(&ccx);
     }
 
-    emit_link_guard_if_necessary(&shared_ccx);
-
     for ccx in shared_ccx.iter() {
         if ccx.sess().opts.debuginfo != NoDebugInfo {
             debuginfo::finalize(&ccx);
@@ -2825,8 +2821,6 @@ pub fn trans_crate<'tcx>(tcx: &TyCtxt<'tcx>,
     if sess.entry_fn.borrow().is_some() {
         reachable_symbols.push("main".to_string());
     }
-    reachable_symbols.push(link_guard::link_guard_name(&link_meta.crate_name,
-                                                       &link_meta.crate_hash));
 
     // For the purposes of LTO, we add to the reachable set all of the upstream
     // reachable extern fns. These functions are all part of the public ABI of
@@ -2870,24 +2864,6 @@ pub fn trans_crate<'tcx>(tcx: &TyCtxt<'tcx>,
     }
 }
 
-fn emit_link_guard_if_necessary(shared_ccx: &SharedCrateContext) {
-    let link_meta = shared_ccx.link_meta();
-    let link_guard_name = link_guard::link_guard_name(&link_meta.crate_name,
-                                                      &link_meta.crate_hash);
-    let link_guard_name = CString::new(link_guard_name).unwrap();
-
-    // Check if the link-guard has already been emitted in a codegen unit
-    let link_guard_already_emitted = shared_ccx.iter().any(|ccx| {
-        let link_guard = unsafe { llvm::LLVMGetNamedValue(ccx.llmod(),
-                                                          link_guard_name.as_ptr()) };
-        !link_guard.is_null()
-    });
-
-    if !link_guard_already_emitted {
-        link_guard::get_or_insert_link_guard(&shared_ccx.get_ccx(0));
-    }
-}
-
 /// We visit all the items in the krate and translate them.  We do
 /// this in two walks. The first walk just finds module items. It then
 /// walks the full contents of those module items and translates all

branches/auto/src/librustc_trans/trans/link_guard.rs

@@ -53,7 +53,6 @@ mod expr;
 mod glue;
 mod inline;
 mod intrinsic;
-pub mod link_guard;
 mod machine;
 mod _match;
 mod meth;